Philips Miniwatt ECC83/12aX7 — Black Plate
MADE IN HOLLAND | RARE BLACK PLATE | TOP RING GETTER
Rare Black Plate
Top Ring Getter
Amplitrex Verified
Up for sale is a world-class of vintage Philips Miniwatt ECC83 (12AX7) tubes. Manufactured in Holland, these units feature the rare and highly coveted Black Plate construction and classic Top Ring Getter design. Known for their refined European tonal signature, these tubes offer exceptional clarity and a liquid-smooth response.
This has been precision tested on the Amplitrex AT1000 digital laboratory tester. The results below follow the Percentage Method against original factory design-center specifications (Ip = 1.2 mA / Gm = 1600 µMhos). These tubes are in excellent health and are ready to elevate the performance of any high-fidelity audio system.
| Sr. No. | Test Triode | Parameter Ip mAdc | Result Ip mAdc | % Ip | Parameter Gm uMhos | Result Gm uMhos | % Gm |
|---|---|---|---|---|---|---|---|
| 2331003 | Triode 1 | 1.2 | 1.1 | 91.6% | 1600 | 1500 | 93.7% |
| Triode 2 | 1.2 | 0.9 | 75.0% | 1600 | 1400 | 87.5% | |
| 2331012 | Triode 1 | 1.2 | 1.0 | 83.3% | 1600 | 1500 | 93.7% |
| Triode 2 | 1.2 | 0.9 | 75.0% | 1600 | 1500 | 93.7% |
⚠️ Note: Custom duties and taxes are the responsibility of the buyer in their country.
Support: [email protected] Precision Verified — NOS Audio Tubes
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